1 / 9

Erosion and Weathering

Erosion and Weathering. What is erosion?. (geology) the mechanical process of wearing or grinding something down (as by particles washing over it) The wearing away of the earth’s surface by natural processes corrosion: erosion by chemical action. Types of Erosion. Water Wind Glacier Soil

kaylaw
Download Presentation

Erosion and Weathering

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Erosion and Weathering

  2. What is erosion? • (geology) the mechanical process of wearing or grinding something down (as by particles washing over it) • The wearing away of the earth’s surface by natural processes • corrosion: erosion by chemical action

  3. Types of Erosion • Water • Wind • Glacier • Soil • Sea

  4. Water • Occurs from chemicals in the water and the force and flow of water • Chemicals break down certain rocks like limestone or chalk • Force of water creates cracks and crevasses • These get bigger and bigger as it gets eroded, particles of the rock get carried in the water and further aid erosion

  5. Wind • The wind picks up smaller particles of rock (pebbles and sand) • These hit landforms and take pieces off them • This friction causes the break up of landforms

  6. Glacier Erosion • What is a GLACIER?: A huge mass of ice slowly flowing over a land mass, formed from compacted snow in an area where snow accumulation exceeds melting • These large bodies of ice that pick up rocks and earth and erode the earth’s surface • Powerful eroding machine, picking up pieces of rock the size of houses in some places • Glaciers are so powerful they can carve valleys and create landforms

  7. Sea Erosion • Salts and other chemicals in the water erode coastal rocks • These are dragged out to sea and deposited in other areas (Long shore Drift) • Wave power creates erosion. Also particles of rock and sediment aid to the erosion process

  8. Soil Erosion • Biggest problem for farmers • Wind and rain remove topsoil and nutrients • Makes the soil infertile and it breaks up leaving dongas

  9. TASK Compare and Contrast weathering and erosion in a Venn Diagram. Write at least 5 sentences of today’s learning.

More Related